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Pigment Red 61

Catalog Number DYE-PIG-0459
CAS Number 1325-29-7
Structure
Synonyms Brmiant Carmine L
Molecular Weight 961.03
Molecular Formula C43H36N4O14S4
CI Number C.I.24830:1
Color brilliant blue light red.
Main Molecular Structure Double azo
Preparation Method 4-((4-Amino-2,5-dimethylphenyl)(phenyl)methyl)-2,5-dimethylbenzenamine double nitrogen, and 3-Hydroxynaphthalene-2,7-disulfonic acid (2 Moore) coupling, and then translate into barium salt.
Properties Soluble in water for dark red, not soluble in ethanol. In concentrated sulfuric acid to blue light red, red after diluted. Pigment aqueous solution with concentrated hydrochloric acid color unchanged; Join concentrated sodium hydroxide solution is a deep red. And C.I.Acid Red 65 chemical structure the same (barium salt).

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